#include <cstdio>
#include <iostream>
using namespace std;

int main_t02_03()
{
	int c;
	while ((c = cin.get()) != EOF) {
		cout << (char)c;
	}
	return 0;
}

int main_t02_01()
{
	float a = 123.45;
	double b = 22.2323421;
	printf("%.5f %.2f %.12f\n", 12.3, a, b);
	return 0;
}

int main_t02_02()
{
	int n = 5;
	double f = 3.9;
	char c = 'a';
	cout << "n=" << n << " ,f=" << f << endl;
	cout << 123 << ", c=" << c << endl;

	int n1, n2;
	cin >> n1 >> n2 >> c >> f;
	cout << n1 << ", " << n2 << ", " << c << ", " << f << endl;

	return 0;
}